Historical clue formulations

• Chinese dynasty of 1,000 years ago — 2016-05-22
• Chinese dynasty of a thousand years ago — 2015-05-03
• 10th- to 12th-century Chinese dynasty — 2011-12-29
• Chinese dynasty of 1,000 years ago — 2009-10-04
• Chinese dynasty a thousand years ago — 2008-11-20
• Ancient dynasty of northern China — 2008-10-16
• 10th-12th century dynasty — 2004-01-11
• Chinese dynasty up to A.D. 1125 — 2003-07-03
• Manchurian river — 1995-06-11
• Dynasty after the T'ang — 1994-10-09